Corrugating-machine



2 Sheets-Sheet 1.

B .m EA BM HG Tm 0 Gm .m ER 0 C .M d o M o W No. 434,594. Patented Aug.19, 1890.

(No Model.) 2 sheets-sheet 2 E. GOTHBBRG. Y GORRUGATING MACHINE.

No. 434,594. Patented Aug. 19, 1890.

[manjar:

UNITED STATES PATENT OFFICE.

ERNEST GOTHBERG, or JERSEY CITY, NEW JERSEY.

VcoRRueATlNe-lvlAcHlNE.

SPECIFICATION forming part of Letters Patent No. 434,594, dated August19, 1890.

Application flied June 1o, i890.

To all whom it may concern:

Be it known that l, ERNEST GOTHBERG, of Jersey City, in the county ofHudson and State of New Jersey, have invented certain new and usefulImprovements in Machines for Corrugating Sheet-Metal Tubing; and I doherebyd'eclare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, making a part of thisspecification.

My invention relates to power-machines fory longitudinally corrugatingand embossing sheet-metal tubing.

'Heretofore in the machines devised and constructed for crimping orcorrugating annular bands or short tubes or the rims of cylindricalVessels the crimping or corrugating rollers have been provided withbearings on one side only of their working-surfaces, so that there is atendency to spring apart at the unsupported ends. This tendency tospring apart prevents the use of such machines in rolling diagonal orspiral grooves, which require in their production that the parallelismof the rollers and of the axis of the tubing with the axes of therollers shall i be constantly and absolutely maintained.

The object of my invention is to provide without increase of cost orweight a machine of greater strength than those heretofore made,'andwhich shall be sufficiently powerful and be otherwise adapted tospirally corrugate or otherwise emboss with accuracy and precisioncomparatively long pieces of sheet-metal tubing preparatory to shapingthe same into hollow spirallycorrugated spheres or spheroids, or forother purposes.

In the accompanying drawings, Figurel is a rear elevation of my powercorrugatingmachine; Fig. 2, an end view of the same; Fig. 3,a transversevertical section in linex of Fig. l, and Fig. 4 an irregular horizontalsection in line y y of Fig. 3.

Similar letters indicate like parts in all of the iigures.

A represents the bed-plate upon which the vmachine is supported, andwhich may be mounted upon a supporting frame or table of any approvedform.

B B are the four standards, secured upon the bed-plate A in pairs, ateach end thereof, and

Serial No. 354,880. (No model.)

between which the journal-boxes C C C2 Cs for the corrugating-rolls D Dare fitted to admit of independent vertical movement, the inner faces ofthe standards being adapted to serve as guides for said journal-boxes.The spaces between the standards at each end of the rolls are made to sofar exceed the diameter of the rolls (see Figs. 2 and 3) as to permitthe pieces of tubing which 'are to be corrugated by the rolls to bereadily inserted between the standards, so as to be passed eldwise overthe lower roll.

The 'upper journal-boxes C C are severally adjusted vertically1 each bymeans of a central screw E, working through a cross-bar or top plate F,secured upon the standards, the lower endof each screw entering the topof the box being confined therein by means of a transverse pin b,carried through the box to engage an annular groove in the end of thescrew, as shown in Figs. 2 and 3. Each of the screws E E is fitted witha beveled pinion G, gearing with a horizontal shaft Il, mounted inbearings in the top plate F connecting the cross-bars F F, and saidshaft H 4is provided with a hand-wheel H', by which the shaft may berotated to produce a movement of the screws E E for the verticaladjustment of the upper j ournal-boxes in either direction, as required.

, The journal-.bearings in said upper boxes C C consist of cylindricalapertures, so that the upper roller D, whose journals are iittedtherein, will partake of the movement thereof.

The bearings for the lower roll D are formed on the upper side of thelower boxes C2 C3, and are semi-cylindrical, so that the roller may bereadily lifted out therefrom, or the box be permitted to drop away fromthe roller. The lower box C2 at one end is supported in its properposition in place to allow the two rolls to be brought together by meansof removable prop blocks or supports K K, inserted under the same uponthe bed-plate A. The lower box C3 under the opposite end of the rolleris supported at the proper height by means of a vertical rod or prop L,carried through the bed-plate to rest upon a lever P, pivoted at one endto a hanger R, depending under the bed-plate, and whose opposite freeend, extending transversely under the bedplate at a right angle with thelength of the IOO - A metallic plate or table M, Figs. 2, 3, and 4,

is mounted horizontally in front of the rolls about on a level withtheir plane of intersection. This table is longitudinally slotted, as ata, in line parallel with the rolls, and upon it are placed twoadjustable bars N N, each at a right angle to the rolls, and which aremade fast when adjusted to or from each other by means of bolts c c,inserted through their outer ends to extend through the slot a in thetable and be secured by nuts working thereon under the table. Betweenthese parallel adjustable bars is tted a plate T, (see Figs. 3 and 4,)longitudinally slotted at its outer end, as at w, and which is securedby a bolt d, passing through said slot and the underlying slot a in thetable M, and made fast by a nut e, screwing thereon under said table.

The longitudinal slot w in the plate T permits the plate to be moved toand from the rolls D D, it being guided in said movementon the bars N N.Upon its front edge is secured a dependent guide-plate U, (see Fig. 3,)which is made to extend parallel with the rolls the greater part of thelength thereof, (see Fig. 4,) the ends of the guide-bars N N, whichoverlap its upper edge, being made to rest upon said edge. (See dottedlines, Fig. 4.) The rolls D D are geared together by cog-wheels D2 atone end thereof, so as to move in unison, and are driven, as usual, by asuitable motor, to which they maybe geared in any approved manner. Theperipheries of the two rolls are spil-ally corrugated, (see Figs. l and4,) each as a counterpart of the other, and are so mounted and gearedtogether as that the spiral ridges on the one shall register andinterlock with the counterpart grooves on the other, as shown in Fig. 3.

In the operation of the machine the rolls D D are first loosened byturning the handwheel H', so as to cause the upper journalboxes and theupper roll D, mounted therein,

A to be lifted suiiiciently to relieve the lower roll D and the pin S,which contines the leverP from pressure. The pin S may then be withdrawnto allow the free end of the lever P to swing downward, (see dottedlines, Fig. 2,) and thereby permit the journal-box C3 at. the outer endof the lower roll D to drop away entirely clear from the roll tofacilitate the insertion of the piece of sheetmetal tubing Y to becorrugated over said lower roll D and between it and the upper roll D,as is illustrated in Fig. 3, the space between the standards B B, inwhich the journal-box C3 travels, being of a width so far eX- ceedingthe diameter of the tubing as to permit this to be readily accomplished.The

journal-box C3 is now lifted back to its place under the outer journalof the lower roller D', to support the same, by means of the lever P,which is then secured by the pin S, so as to afford a firm solid bearingand support for said outer end of the roll. By turning the hand-wheel Hthe screws E E are brought to bear upon the upper roll D to carry ittoward the lower roll D and clamp and compress firmly between them theinterposed sheetmetal tubing Y, so that the revolution of the rolls whendriven by power shall operate to crimp and corrugate the tube along itsentire length in spiral or diagonal corrugations corresponding withthose on therolls. As the tubingis revolved between the rolls, it iscarried against the guide-plate U, as illustrated in Fig. 3, and thisplate operates to maintain the parallelism of the tube vwith the axes ofthe rolls, sol as to preserve the regularity and uniformity of thespiral corrugations.

l claim as my inventionl. The combination, with the working-rolls,

in a machine for embossing and corrugating sheet-metal tubing, of amovable journal-box supporting the journal at one end of the lower rolland adapted to drop wholly away from said journal, standards formingguides for the ends of said journal-box to direct its movement, saidstandards being separated by an interval exceeding the diameter of thelower roll, and means for rigidly supporting the journal-box when inposition to furnish a bearing for the roll, substantially in the mannerand for the purpose herein set forth.

2. The combination, with the working-rolls, in a machine for embossingand corrugating sheet-metal tubing, of a movable journal-box supportingthe journal at one end of the lower roll and adapted to drop wholly awayfrom said journal, standards forming guides for the ends of saidjournal-box to direct its movement, said standards being separated by aninterval exceeding the diameter of the lower roll, a pivoted leversupporting said box, and a device for rigidly fastening and confiningsaid lever when the box has been carried thereby into supportingrelation to the roll, all substantially in the manner and for thepurpose herein set forth.

3. The combination, with the working-rolls, in a machine for embossingand corrugating metal tubing, and with the frame in which said rolls aremounted, of detachable bearings for the journals of the lower roll, adetachable prop interposed between the bearing at one end of said rolland the frame to aord rigid unyielding support to said bearing, apivoted lever mounted under the bearing at the opposite end of said rollto support said bearing and carry it against the jour nal, and means forrigidly securing said lever to provide an unyielding support for theroll, substantially in the manner and for the purpose herein set forth.

4. The combination, in a machine for em- IOO IIO

bossing and corrugating sheet-metal tubing, of the bed-plate, the framesupported thereby, the upper roll mounted in' journal-boxes guidedvertically between the standards of the frame, means for securing saidjournalboxes, the lower roll mounted upon journalboxes fitted to movebetween said standards and to drop away from the bearings of the upperroll, one or more detachable supports fitted under one of thejournal-boxes at one end of the lower roll, a movable prop tted underthe journal-box at the opposite end of said roll, anda device foractuating and supporting said movable prop, substantially in the mannerand for the purpose herein set forth.

5. The combination of the bed-plate, the standards, the cross-bars uponsaid standards, the two upper journal-boxes fitted to move verticallybetween the standards, the adjusting-screws working through thecross-bars and supporting the upper boxes, the roll mounted in saidboxes, the two lower journal-boxes fitted severally under the upperboxes to move between the same standards, a detachable prop interposedbetween the bed-plate and one of said lower boxes, the lever pivoted tooscillate vertically under the tion, all substantially in the manner andfor the purpose hereinset forth.

6. The combination, with the rolls, in a machine for corrugatingmetallic tubing, of a horizontal table mounted in front of the rollsparallel therewith, the parallel guide-bars mounted upon said table at aright angle to the rolls and severally admitting of adjustmentvinadirection parallel therewith, an interposed central bar or plateadmitting of adj ustment between them to and from the rol-ls, and aguide-plate depending from said central bar longitudinally between therolls and the table and parallel therewith, substantially in Ithe mannerand for the purpose herein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ERNEST GOTHBERG.

Witnesses:

A. N. J ESBERA, 1E. M. WATSON.

